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[" 17.If a denotes the number of permuta...

[" 17.If a denotes the number of permutations of "x+2" things "],[" taken all at a time,"b" the number of permutations of "x" things "],[" taken "11" at "a" time and "c" the number of permutations of "],[x-11" things taken all at a time such that "a=182bc," then "],[x-11" things taken all at a time such that "a=182bc," then "],[" the value of "x" is "],[[" (a) "15," (d) "18],[" (c) "10," form different words with the help of "]]

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